Printed two of these for two CTC i3 Pro B printers. They fit perfectly and work great!
Initially, I printed PLA ones, just because I was curious exactly how long they'd last (and my printers weren't good enough to do PETG yet).
Well, the answer was about 2 months before they started to droop. They've since been replaced with PETG ones.
Random eBay PLA & PETG